Flat Roof Parapet Gutter Detail

The cantilevered roof overhangs have a gravel stop metal flashing piece at the roof edge concealing the slope.

Flat roof parapet gutter detail.

Timber frame flat roof detail. Flat roof detail masonry cavity wall flat roof insulation above and between joists. The first example below shows a hybrid of traditional flat roofs. If you didn t get it right you concentrated the stresses at roof edges and you could suck in a parapet or tear or rip a membrane at the parapet photographs 3 and 4.

This is a potentially very dangerous situation. Gutters can also be installed to work in tandem with a scupper system. Gutters are often a viable option for flat roofs directing water on the outside of the structure to downspouts. It is used at a single ply roof membrane sloped per foot to a gutter like on the bainbridge residence that we designed and built above.

The parapet itself is standard wood framing with an applied siding in. Parapet detail masonry cavity wall flat roof with parapet insulation above joists. In reality a flat roof isn t fully level and flat roofs built for gutters should direct water to one or more sides where the gutters are installed. Alwitra flat roof details.

Details and technical drawings of the flat roof drainage as downloads in the practical pdf dxf and dwg formats. Timber frame flat roof detail. Modern flat roofs with parapet walls. Courtesy of max baker and the national research council of canada.

The main roof beyond has a coping cap flashing piece over the parapet wall. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall. At this point its time to discuss the overflow required by code. On a flat roof there is usually a small wall called a parapet at the edge of the roof.